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>Àû°Ý½É»ç¼¼ºÎ±âÁØ¿¡ º¸¸é 1¾ï¹Ì¸¸ °ø»ç¿¡´Â ¼öÇà´É·ÂÀÌ 10Á¡, ÀÔÂû°¡°Ý Æò°¡ 90Á¡À̶ó°í ³ª¿ÍÀִµ¥, ¸îÁ¡ ¸Â¾Æ¾ßÁö ÇÕ°ÝÀ» Çϴ°ÍÀԴϱî? ¶Ç , ÀÔÂû°¡°Ý Æò°¡(90Á¡)Áß ÅõÂûÀ² : ( (88*20) -5 ) / 20 = 88.75 Áï,87.745%¶ó°í ³ª¿ÍÀִµ¥ °è»êÇÏ´Â ¹æ¹ýÁ» °¡¸£ÃÄ Áֽʽÿä
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[´ä] ÀÔÂû°¡°Ý Æò°¡(90Á¡)= 90 - 20¡¿ £ü ( 88/100-ÀÔÂû°¡°Ý/¿¹Á¤°¡°Ý)¡¿100 £ü ¿¡¼­
³«ÂûµÇ±â À§ÇÑ ÀÔÂû°¡°ÝÁ¡¼ö´Â 85Á¡À» ¹ÞÀ¸¸é µË´Ï´Ù. ±×·¯¸é ¼öÇà´É·ÂÆò°¡Áß °æ¿µ»óÅÂÆò°¡Á¡¼ö 10Á¡À» ´õÇÏ¿© 95Á¡ÀÌ µÇ¾î ³«ÂûµÉ¼ö Àֱ⠶§¹®ÀÔ´Ï´Ù.

ÅõÂûÀ²À» »êÃâÇÏ´Â ¹æ¹ýÀº ÀÔÂû°¡°ÝÁ¡¼ö °è»ê½Ä¿¡¼­ ±¸ÇÒ¼ö ÀÖ½À´Ï´Ù.
ÀÔÂû°¡°Ý Æò°¡(90Á¡)¿¡¼­ : 90 - 20¡¿ £ü ( 88/100-ÀÔÂû°¡°Ý/¿¹Á¤°¡°Ý)¡¿100 £ü = 85 °¡ µË´Ï´Ù.

20 ¡¿ £ü ( 88/100-ÀÔÂû°¡°Ý/¿¹Á¤°¡°Ý)¡¿100 £ü£½90 - 85
20 ¡¿ £ü ( 88/100-ÀÔÂû°¡°Ý/¿¹Á¤°¡°Ý)¡¿100 £ü£½5
£ü ( 88/100-ÀÔÂû°¡°Ý/¿¹Á¤°¡°Ý)¡¿100 £ü£½0.25
( 88/100-ÀÔÂû°¡°Ý/¿¹Á¤°¡°Ý)£½0.0025, 88/100 Àº 0.88 À̹ǷÎ
(0.88 – ÀÔÂû°¡°Ý/¿¹Á¤°¡°Ý) = 0.0025
ÀÔÂû°¡°Ý/¿¹Á¤°¡°Ý = 0.88 - 0.0025
ÅõÂûÀ² = 0.8775  
¡Ø ÀÔÂû°¡°Ý/¿¹Á¤°¡°Ý = ÅõÂûÀ² À̹ǷÎ,
    ÅõÂûÀ² = 0.8775 – 0.00005 ( ¼Ò¼öÁ¡ ´Ù¼¸Â°ÀÚ¸®¿¡¼­ ¹Ý¿Ã¸² ÇØ¾ß ÇϹǷΠ)
    ÅõÂûÀ² = 0.87745  ( À̰ÍÀ» ¹éºÐÀ²(%)·Î Ç¥½ÃÇϸé )
    ÅõÂûÀ² = 87.745%  
                  
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